KR20240008088A - Temperature compensation system and exercise bicycle including the same - Google Patents

Abstract

Disclosed is a temperature compensation system capable of providing consistent resistance by compensating the strength of resistance according to changes in temperature, and an exercise bicycle including the same. The temperature compensation system of the exercise bike monitors the temperature of the coil in real time through a driver that drives the coil of the EMS of the exercise bike according to the PWM signal, a temperature sensor that detects the temperature of the coil, and a temperature sensor, and adjusts the PWM according to the temperature of the coil. It includes a processor that compensates for the current flowing in the coil by adjusting the duty ratio of the signal.

Description

TEMPERATURE COMPENSATION SYSTEM AND EXERCISE BICYCLE INCLUDING THE SAME}

This specification relates to an exercise bike, a temperature compensation system capable of providing consistent resistance by compensating the strength of the resistance of an EMS (Electronic Magnetic System) according to changes in temperature, and an exercise bike including the same.

Exercise bikes are generally used as indoor exercise equipment to strengthen muscles. An exercise bike allows you to exercise by rotating the wheels by pedaling.

These exercise bikes can be divided into spinning bikes, which allow users to perform spinning exercises, and indoor bikes, which rotate the wheels by rotating the pedals in the forward direction. Spinning bicycles may have a non-freewheel structure, and indoor bicycles may have a freewheel structure.

In a bicycle with a non-freewheel structure, power is transmitted to the wheels when the pedals are rotated in the forward or reverse direction, and in bicycles with a freewheel structure, power is transmitted to the wheels only when the pedals are rotated in the forward direction.

Meanwhile, exercise bikes contain an EMS (Electronic Magnetic System) that adjusts resistance. EMS provides the resistance desired by the user through electromagnetic force according to the intensity of the applied power. For example, prior art US 6,084,325 (registered on July 4, 2000) discloses a brake device combining power generation and eddy current magnetoresistance.

However, the brake device according to the prior art does not disclose a configuration that compensates for the strength of resistance according to changes in temperature. Exercise bicycles equipped with a brake device according to the prior art have a problem in that heat is generated when a user uses the bicycle for a long period of time, and the resistance set in the EMS decreases over time due to an increase in temperature due to heat generation.

The prior art has a problem of not providing consistent resistance due to the resistance of the EMS decreasing over time.

Therefore, there is a need for technology that can consistently provide the resistance set by the user by eliminating the effect of heat generation on the resistance even when the user uses the exercise bike for a long time.

Patent Document 1: US 6,084,325 (registered on July 4, 2000)

The technical problem to be solved by the present invention is to provide a temperature compensation system that can compensate for the strength of resistance of an EMS (Electronic Magnetic System) according to changes in temperature and an exercise bicycle including the same.

In addition, the purpose of the present invention is to provide a temperature compensation system that can maintain a preset resistance consistently over time by compensating the strength of the resistance force of the EMS according to changes in temperature, and an exercise bicycle including the same.

In addition, the purpose of the present invention is to provide a temperature compensation system that can provide a consistent riding experience to the user by eliminating the effect of reduced resistance of the EMS due to heat generation even when the user rides for a long time, and an exercise bicycle including the same.

Another purpose is to provide a temperature compensation system that can adjust the duty ratio of the input current applied to the EMS according to changes in the temperature of the coil of the EMS and an exercise bike including the same.

Another purpose is to provide a temperature compensation system that can adjust the duty ratio of the input current according to changes in the current of the EMS coil and an exercise bike including the same.

The objects of the present invention are not limited to the objects mentioned above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description and will be more clearly understood by the examples of the present invention. Additionally, it will be readily apparent that the objects and advantages of the present invention can be realized by the means and combinations thereof indicated in the patent claims.

A temperature compensation system and an exercise bike including the same according to an embodiment compensate for the strength of the resistance force of the EMS according to changes in the temperature of the coil of the EMS.

Specifically, the temperature of the EMS coil is monitored in real time and the duty ratio of the PWM (Pulse Width Modulation) signal is adjusted according to the coil temperature to compensate for the current flowing in the coil, thereby compensating the strength of the EMS resistance according to temperature changes. can do.

In addition, a temperature compensation system according to an embodiment and an exercise bike including the same compensate for the strength of the resistance force of the EMS according to changes in temperature to consistently maintain the preset resistance force over time.

Specifically, the current compensation value is calculated based on the coil's resistance value table according to temperature changes, and the duty ratio of the PWM signal is adjusted according to the current compensation value to consistently maintain the preset resistance.

In addition, a temperature compensation system according to an embodiment and an exercise bike including the same provide a consistent riding experience to the user by eliminating the effect of a decrease in resistance of the EMS due to heat generation.

Specifically, by monitoring the current of the EMS coil in real time and adjusting the duty ratio of the PWM signal according to the coil current to compensate for the current flowing in the coil, the effect of reducing the resistance of the EMS due to heat generation even when the user rides for a long time can be removed.

A temperature compensation system according to an embodiment and an exercise bike including the same measure the temperature of the coil in real time through a driver that drives the coil of the EMS of the exercise bike according to a PWM signal, a temperature sensor that detects the temperature of the coil, and a temperature sensor. It includes a processor that monitors and adjusts the duty ratio of the PWM signal according to the temperature of the coil to compensate for the current flowing in the coil.

A temperature compensation system according to another embodiment and an exercise bike including the same include a driver that drives the coil of the EMS of the exercise bike according to a PWM signal, a current sensor that detects the current of the coil, and a current sensor that measures the current of the coil in real time. It includes a processor that monitors and compensates the current flowing in the coil by adjusting the duty ratio of the PWM signal according to the coil current.

An exercise bike according to an embodiment includes an EMS that sets each resistance level of the exercise bike according to an input signal, and monitors at least one of the temperature and current of the coil of the EMS in real time and monitors in real time the temperature of the coil or the current of the coil. It includes a temperature compensation system that calculates the current compensation value and compensates the coil current with the current compensation value to maintain the target resistance level set in the EMS.

According to embodiments, the temperature of the coil of the EMS can be monitored in real time and the duty ratio of the PWM signal for applying current to the coil can be adjusted according to the temperature of the coil to compensate for the current flowing in the coil.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same may provide consistent resistance by compensating the strength of the resistance force of the EMS according to changes in temperature.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same can provide a consistent riding experience to the user by eliminating the effect of reduced resistance due to heat generation even when the user rides for a long time.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same can maintain consistent resistance by adjusting the duty ratio of the input current applied to the EMS according to changes in the temperature of the coil of the EMS.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same can maintain consistent resistance by adjusting the duty ratio of the input current according to changes in the current of the coil of the EMS.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same maintain a set resistance consistently over time, thereby improving user convenience.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

1 is a perspective view of an exercise bike according to one embodiment.
Figure 2 is a side view of an exercise bike according to one embodiment.
3 is a block diagram of a temperature compensation system for an exercise bike according to one embodiment.
Figure 4 is a block diagram of a temperature compensation system for an exercise bike according to another embodiment.
Figure 5 is a graph showing changes in coil temperature and flywheel torque over time.

The above-described purpose, means, and effects will be described in detail later with reference to the attached drawings, so that those skilled in the art will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, identical reference numerals are used to indicate identical or similar components.

Hereinafter, a temperature compensation system capable of compensating the strength of resistance of an EMS (Electronic Magnetic System) according to changes in temperature and an exercise bike including the same are disclosed.

Additionally, a temperature compensation system capable of maintaining a preset resistance consistently over time by compensating for the strength of EMS resistance according to changes in temperature and an exercise bicycle including the same are disclosed.

In addition, a temperature compensation system capable of providing a consistent riding experience to the user by eliminating the effect of reduction in resistance of EMS due to heat generation even when the user rides for a long time, and an exercise bicycle including the same are disclosed.

Additionally, a temperature compensation system capable of adjusting the duty ratio of an input current applied to the EMS according to changes in the temperature of the coil of the EMS and an exercise bike including the same are disclosed.

Additionally, a temperature compensation system capable of adjusting the duty ratio of the input current according to changes in the current of the coil of the EMS and an exercise bike including the same are disclosed.

In the specification, EMS can be defined as a system that uses electromagnetism to adjust the resistance of an exercise bike. For example, the EMS includes an iron core, a coil, and a flywheel, and electromagnetism is generated depending on the strength of the current applied to the coil to provide resistance to rotation of the flywheel.

In the specification, a resistance step, an electromagnetic brake step, or a resistance force may be defined as a resistance value or step set in the EMS using electromagnetism generated according to the size of the current applied to the EMS of the exercise bike.

1 is a perspective view of an exercise bike according to one embodiment. Figure 2 is a side view of an exercise bike according to one embodiment.

Referring to Figures 1 and 2, the exercise bike 100 includes a support 104, a post 102, a body casing 103, a head casing 101, a front frame 106, a rear frame 107a, 107b, 107c), head frame 108, EMS 460, disk 105b, stator 180, and flywheel 170.

Post 102 extends vertically from support 104 and has an adjustable height. Post 102 may be oriented rearward at an angle.

Front frame 106 is connected to posts 102. The front frame 106 may extend from the center of the post 102 toward the front and top.

The head frame 108 is connected to the front frame 106. The head frame 108 may extend from an end of the front frame 106 to be oriented forward at a certain angle.

A stem is connected to the upper part of the head frame 108, and a handle and a display device are connected to the stem.

The rear frames 107a and 107b are connected to the posts 102. Each of the rear frames 107a and 107b extends rearward, and the ends of the rear frames 107a and 107b are connected by the rear frame 107c.

Each frame supports the drive shaft 105a and the rotation shaft 160. These frames may be formed in various structures depending on the load distribution and structure of the exercise bike 100.

A body casing 103 and a head casing 101 are installed to cover the outside of the frames. Each frame, a flywheel 170, a brake device (not shown), etc. are installed inside the body casing 103 and the head casing 101.

The body casing 103 may have rounded front and rear sides and a flat shape on both sides in the left and right directions. Disks 105b are formed on both left and right sides of the body casing 103.

The disk 105b is formed in the shape of a circular panel. The body casing 103 and disk 105b shield the frames, flywheel 170, stator 180, etc. from the outside. Accordingly, the possibility of injury can be eliminated by blocking access to users, infants, and pets.

The center of the disk 105b is connected to both sides of the drive shaft 105a. A pedal is attached to the drive shaft 105a of the disk 105b and a rotating crank is connected to it.

The drive shaft 105a is installed to penetrate the center of the drive wheel (not shown). The drive shaft 105a and the rotation shaft 160 are connected by a power transmission unit (not shown) such as a belt or chain. When the user steps on the pedal, the drive wheel rotates. As the drive wheel rotates, the drive shaft 105a and the rotation shaft 160 rotate.

A head casing 101 extends upward on the front side of the body casing 103. The head casing 101 is supported by the front frame 106 and the head frame 108. The head casing 101 is connected to the stem.

The stem includes a stem post that is coupled to the head casing 101 in a height-adjustable manner. An indicator may be placed on the upper side of the stem. The display unit may display exercise information such as the speed of the exercise bike 100, rotational load, etc. A handle is connected to the upper side of the stem.

Since the upper side of the head casing 101 is disposed inclined toward the front side than the lower side, the higher the height of the stem is adjusted, the farther the handle moves forward. Accordingly, by adjusting the height of the handle as the user's height increases, the height and front-to-back distance of the handle 143 can be appropriately adjusted to suit the user's height.

A seat tube is installed inside the body casing 103. The seat tube 109 may be installed to penetrate the inside of the body casing 103. The seat tube 109 may be arranged to be inclined in the vertical direction of the body casing 103.

The seat tube 109 is disposed between the drive shaft 105a and the rotation shaft 160. This sheet tube 109 may be formed in various shapes such as a polygonal pipe or a circular pipe.

A post 102 is coupled to the inside of the seat tube 109 to enable height adjustment. The upper end of the post 102 is disposed to be inclined rearward than the lower end. A seat on which a user can sit is installed on the upper side of the post 102.

The seat post 102 may be installed inside the seat tube 109 to have an adjustable height. The cross section of the seat post 102 may be formed in various ways depending on the shape of the seat tube 109.

Since the seat post 102 and the seat tube 109 are inclined in the vertical direction, the higher the seat post 102 is, the farther the seat moves from the handle. Accordingly, the height of the post 102 increases as the user's height increases, so that the height and front-to-back distance of the seat and handle can be appropriately adjusted to suit the user's height.

The flywheel 170 is coupled to the rotation shaft 160. A rotation shaft 160 is coupled to the rotation center of the flywheel 170, and the rotation shaft 160 and the flywheel 170 are connected via a one-way bearing (not shown). The one-way bearing is arranged such that the rotating shaft 160 and the flywheel 170 are concentric.

Additionally, the rotation shaft 160 and the flywheel 170 may be restrained or released by a clutch gear module (not shown). The clutch gear module may also be arranged to be concentric with the rotation shaft 160 and the flywheel 170. The flywheel 170 rotates in freewheel mode and non-freewheel mode.

The freewheel mode is an operation mode in which the flywheel 170 rotates by the restraining force of the one-way bearing when the rotation shaft 160 rotates in the forward direction, and the flywheel 170 does not rotate when the rotation shaft 160 rotates in the reverse direction. means.

In the freewheel mode, when the rotation shaft 160 rotates in the reverse direction, the rotation shaft 160 idles on the flywheel 170.

The non-freewheel mode refers to an operation mode in which the flywheel 170 rotates in all cases where the rotation shaft 160 rotates in the forward or reverse direction. In the non-freewheel mode, the rotation shaft 160 and the flywheel 170 are locked to each other by the clutch gear module and rotate together.

The stator 180 is installed on the frame unit 120 to adjust the rotational load of the flywheel 170 by applying magnetic force to the flywheel 170. The stator 180 is an electromagnet with a coil 182 wound around an iron core 181. As power is applied to the coil 182, magnetic force is generated in the stator 180. The magnetic force strength of the stator 180 can be adjusted by adjusting the current applied to the coil 182 of the stator 180.

As the rotational load (strength of magnetic force of the stator 180) of the flywheel 170 increases, the pedaling force increases, and as the rotational load (strength of magnetic force of the stator 180) of the flywheel 170 decreases, the pedal The stepping force decreases. Accordingly, the rotational load of the flywheel 170 can be adjusted by adjusting the magnetic force strength of the stator 180, thereby controlling the user's walking force.

In the exercise bike 100 according to the present invention, the flywheel 170 may be arranged rear or front with respect to the drive shaft 105a. The shapes of the frames and casing change depending on the installation location of the flywheel 170. Additionally, the positions of the drive shaft 105a and the rotation shaft 160 are also changed.

In one example, exercise bike 100 may include a flywheel for controlling resistance and reacting to conditions of the virtual environment, a motor assembly, and countless other possibilities for outdoor simulation, game play, training, etc.

The crank is coupled to a drive sprocket (gear) that is connected back to the flywheel and motor assembly via a belt, chain, or other mechanism. The flywheel is used to simulate the inertia and momentum of the bicycle. To improve controllability, a motor can drive the flywheel or provide resistance to the flywheel.

The force applied to the flywheel can also be used to simulate different gear ratios or gear shifting of an outdoor bicycle.

The exercise bike 100 may be designed so that the wheels are designed with an EMS structure and the processor generates electromagnetism through current control, allowing the user to feel the real feeling of going uphill or downhill in the actual field.

A description of providing a consistent riding experience of the exercise bike 100 is as follows.

For example, when using spinning content, if the resistance level is 0 to 99 (100 levels), set to level 50 and assume that you ride for a long time, the resistance at the first 50 levels and the resistance level at 50 when the heat is generated after using for a long time are set to level 50. The resistance of the steps may vary.

From a user's perspective, they can feel a change in resistance while riding at the same resistance level.

Accordingly, there is a need to develop technology for an exercise bike 100 that can provide a consistent riding experience.

EMS current compensation due to coil heating is explained as follows.

When riding for a long time or continuously maintaining strong resistance, heat is generated due to the current flowing through the coil.

The resistance value changes depending on the temperature depending on the material properties of the coil (e.g. copper). In addition, the strength of the electromagnetic force of the EMS changes due to the change in current due to the change in resistance, which in turn changes the resistance.

Therefore, compensation for the amount of current change due to heat generation is necessary.

3 is a block diagram of a temperature compensation system for an exercise bike according to one embodiment.

Referring to FIG. 3, the exercise bike 100 according to one embodiment includes a temperature compensation system 400 that compensates for the amount of current change due to heat generation.

The temperature compensation system 400 includes a driver 420, a temperature sensor 410, and a processor 430.

The driver 420 drives the coil 182 of the EMS of the exercise bike 100. For example, the driver 420 adjusts the intensity of the current applied to the coil 182 of the EMS according to the PWM signal provided from the processor 430. The driver 420 controls the electromagnetic intensity of the coil 182 by applying power to the coil 182 in a PWM manner.

The temperature sensor 410 detects the temperature of the coil 182 and provides temperature data to the processor 430. For example, the temperature sensor 410 detects a change in temperature of the coil 182 and converts it into a measurable signal. Thermocouples, thermistors, resistance temperature detectors (RTDs), etc. may be applied to detect temperature changes in the coil 182.

The processor 430 monitors the temperature of the coil 182 in real time through the temperature sensor 410. The processor 430 adjusts the duty ratio of the PWM signal according to the temperature data of the coil 182 received from the temperature sensor 410 to compensate for the current flowing in the coil 182.

In one example, processor 430 may include one or more of a central processing unit (CPU), an application processor, or a communications processor. The processor 430 may operate based on a resistance change model according to changes in temperature and execute one or more instructions related to EMS control of the exercise bike 100.

Although not shown in the drawing, it may include internal memory. Internal memory may be volatile and/or non-volatile memory. The internal memory may store a resistance change model according to a change in temperature and may store one or more commands related to EMS control of the exercise bike 100.

Although not shown in the drawing, it may include a communication unit. The communication unit may communicate with a server that provides programs or/and content related to the exercise bike 100 and a smart terminal on which an application related to the exercise bike 100 is installed. The communication unit may receive software such as temperature compensation firmware and content programs from the service server, and may provide the received software to the processor 430 or store it in internal memory.

Returning to the description of the temperature compensation system 400, the processor 430 calculates a current compensation value based on a table of coil resistance values according to temperature changes or a coil resistance change model according to temperature changes. Then, the processor 430 adjusts the duty ratio of the PWM signal according to the current compensation value to compensate for the current of the coil according to the change in temperature.

For example, when a user rides the exercise bike 100 for a long time, the temperature of the coil 182 rises above the reference temperature. At this time, the processor 430 calculates a current compensation value based on a table of resistance values of the coil 182 according to temperature, and increases the duty ratio of the PWM signal by an amount corresponding to the current compensation value to compensate for the current of the coil.

This processor 430 adjusts the duty ratio of the PWM signal according to the temperature of the EMS coil 182 in the exercise bike to maintain the rated current corresponding to the resistance level set in the EMS.

In this way, the temperature compensation system and the exercise bike including the same provide consistent resistance by compensating the strength of the resistance according to changes in temperature. Additionally, a temperature compensation system and an exercise bike including the same provide a consistent riding experience to the user by eliminating the effect of reduced resistance due to heat generation.

Figure 4 is a block diagram of a temperature compensation system for an exercise bike according to another embodiment.

Referring to FIG. 4 , the temperature compensation system 400 includes a driver 420, a current sensor 440, a processor 430, and a memory 450.

The driver 420 drives the coil of the EMS of the exercise bike according to the PWM signal.

The current sensor 440 detects the current flowing in the coil 182 and provides current data to the processor 430. For example, the current sensor 440 can detect the current flowing in the coil 182 using a shunt resistance.

This shunt resistor refers to a resistance connected in parallel with the instrument so that only a certain percentage of the current to be measured flows through the ammeter in order to measure current above the maximum scale value of the ammeter.

The processor 430 monitors the current flowing in the coil 182 in real time through the current sensor 440, and compensates for the current flowing in the coil 182 by adjusting the duty ratio of the PWM signal according to the current in the coil 182. do.

The memory 450 stores at least one of a table of current values flowing through the coil according to temperature and a table of rated current values for each resistance level.

Specifically, the processor 430 calculates a current compensation value based on a table of current values flowing through the coil according to temperature and a table of rated current values for each resistance level stored in the memory 450. Then, the processor 430 adjusts the duty ratio of the PWM signal according to the current compensation value.

For example, when the current of the coil 182 becomes smaller than the rated current value corresponding to the target resistance level set in the EMS due to the user riding the exercise bike 100 for a long time, the processor 430 increases the duty ratio of the PWM signal. to compensate for the current flowing in the coil 182.

In this way, the processor 430 adjusts the duty ratio of the PWM signal according to the current flowing in the coil 182 to maintain the rated current corresponding to the target resistance level set in the EMS.

In this way, the temperature compensation system and the exercise bike including the same provide consistent resistance by compensating the strength of the resistance according to changes in temperature. Additionally, a temperature compensation system and an exercise bike including the same provide a consistent riding experience to the user by eliminating the effect of reduced resistance due to heat generation.

Figure 5 is a graph showing changes in coil temperature and flywheel torque over time.

Referring to FIG. 5, in an experiment on changes in coil temperature and flywheel torque according to temperature, the experimental conditions are that the flywheel 170 rotates at a speed of 500 RPM and the coil input current duty ratio is 83.52%.

Under the above conditions, the temperature change of the coil over time and the torque data required to rotate the flywheel were collected and displayed in a graph.

As the temperature of the coil 182 increased from about 25 degrees to 40 degrees, the torque decreased from a maximum of 10.88 Nm to 9.05 Nm. This means that the torque required to maintain 500 rpm has decreased, which means that the strength of the braking force and resistance using EMS has decreased.

To compensate for the reduced resistance, the temperature compensation system 400 according to this embodiment is applied.

In this way, the temperature compensation system 400 of the exercise bike 100 monitors the temperature of the EMS coil 182 in real time through the temperature sensor 410, and uses a resistance change model of the coil 182 according to temperature to determine the EMS coil 182. Compensates the duty ratio of the input current.

Specifically, the temperature compensation system 400 of the exercise bike 100 includes a driver 420 that drives the coil 182 of the EMS of the exercise bike 100 according to a PWM signal, and a driver 420 that detects the temperature of the coil 182. Monitors the temperature of the coil 182 in real time through the temperature sensor 410 and adjusts the duty ratio of the PWM signal according to the temperature of the coil 182 to compensate for the current flowing in the coil 182. Includes a processor 430.

In addition, the temperature compensation system 400 of the exercise bike 100 monitors the current of the coil 182 in real time through the current sensor 440 and determines the duty of the current flowing through the coil 182 using the rated current table for each resistance level. compensate for the rain

Specifically, the temperature compensation system 400 of the exercise bike 100 includes a driver 420 that drives the coil 182 of the EMS of the exercise bike 100 according to a PWM signal, and a driver 420 that detects the current of the coil 182. Monitor the current of the coil 182 in real time through the current sensor 440 and compensate the current flowing in the coil 182 by adjusting the duty ratio of the PWM signal according to the current of the coil 182. It includes a processor 430 that does.

An exercise bike according to an embodiment includes an EMS that sets each resistance level of the exercise bike according to an input signal, and monitors at least one of the temperature and current of the coil of the EMS in real time and monitors in real time the temperature of the coil or the current of the coil. It includes a temperature compensation system that maintains the target resistance level set in the EMS by compensating the coil current with the corresponding current compensation value.

Here, the input signal is a signal input by the user to set the resistance level of the EMS, and the input signal can be input to the system of the exercise bike 100 through the key input unit of the exercise bike 100 or the application of the smart terminal. there is.

According to embodiments, the temperature of the coil of the EMS can be monitored in real time and the duty ratio of the PWM signal for applying current to the coil can be adjusted according to the temperature of the coil to compensate for the current flowing in the coil.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same may provide consistent resistance by compensating the strength of the resistance force of the EMS according to changes in temperature.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same can provide a consistent riding experience to the user by eliminating the effect of reduced resistance due to heat generation even when the user rides for a long time.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same can maintain consistent resistance by adjusting the duty ratio of the input current applied to the EMS according to changes in the temperature of the coil of the EMS.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same can maintain consistent resistance by adjusting the duty ratio of the input current according to changes in the current of the coil of the EMS.

Additionally, a temperature compensation system according to an embodiment and an exercise bike including the same maintain a set resistance consistently over time, thereby improving user convenience.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

100: exercise bike
101: head casing 102: post
103: body casing 104: support
105a: Drive shaft 105b: Disk
106: front frame 107a, 107b, 107c: rear frame
108: Head frame
160: rotation axis 170: flywheel
180: stator 181: iron core
182: coil
400: Temperature compensation system
410: Temperature sensor 420: Driver
430: processor 440: shunt resistor
450: memory

Claims (20)

A driver that drives the coil of the exercise bike's EMS (Electronic Magnetic System) according to a PWM (Pulse Width Modulation) signal;
a temperature sensor that detects the temperature of the coil; and
a processor that monitors the temperature of the coil in real time through the temperature sensor and adjusts the duty ratio of the PWM signal according to the temperature of the coil to compensate for the current flowing in the coil;
Temperature compensation system including. According to claim 1,
A temperature compensation system further comprising a memory for storing a table of resistance values of the coil according to changes in temperature. According to claim 1,
A temperature compensation system in which the processor calculates a current compensation value based on a table of coil resistance values according to temperature changes. According to claim 3,
A temperature compensation system wherein the processor adjusts the duty ratio of the PWM signal according to the current compensation value. According to claim 1,
A temperature compensation system in which the processor increases the duty ratio of the PWM signal by calculating a current compensation value based on a table of resistance values of the coil according to temperature when the temperature of the coil increases. According to claim 1,
The processor adjusts the duty ratio of the PWM signal according to the temperature of the coil to maintain the rated current corresponding to the resistance level set in the EMS. A driver that drives the coils of the EMS of the exercise bike according to the PWM signal;
A current sensor that detects the current in the coil; and
a processor that monitors the current of the coil in real time through the current sensor and adjusts the duty ratio of the PWM signal according to the current of the coil to compensate for the current flowing in the coil;
Temperature compensation system including. According to claim 7,
A temperature compensation system further comprising a memory that stores a table of current values flowing through the coil according to temperature and a table of rated current values for each resistance level. According to claim 7,
A temperature compensation system in which the processor calculates a current compensation value based on a table of current values flowing through the coil according to temperature and a table of rated current values for each resistance level. According to clause 9,
A temperature compensation system wherein the processor adjusts the duty ratio of the PWM signal according to the current compensation value. According to claim 7,
The processor compensates for the current flowing in the coil by increasing the duty ratio of the PWM signal when the current in the coil becomes smaller than the rated current value corresponding to the target resistance level set in the EMS. According to claim 7,
The processor adjusts the duty ratio of the PWM signal according to the current flowing in the coil to maintain the rated current corresponding to the target resistance level set in the EMS. EMS, which sets each resistance level of the exercise bike according to the input signal; and
Monitor at least one of the temperature of the coil of the EMS and the current of the coil in real time, calculate a current compensation value according to the temperature of the coil or the current of the coil, and compensate the current of the coil with the current compensation value to control the EMS. An exercise bike that includes a temperature compensation system that maintains a set target resistance level. According to claim 13,
The temperature compensation system is
a driver that drives the coil according to a PWM signal;
a temperature sensor that detects the temperature of the coil; and
A processor that monitors the temperature of the coil in real time through the temperature sensor and adjusts the duty ratio of the PWM signal according to the temperature of the coil to maintain the rated current corresponding to the target resistance level set in the EMS;
Exercise bike including. According to claim 14,
The processor calculates a current compensation value based on a table of resistance values of the coil according to temperature, and adjusts the duty ratio of the PWM signal according to the current compensation value. According to claim 14,
The exercise bike wherein when the temperature of the coil rises, the processor increases the duty ratio of the PWM signal by calculating a current compensation value based on a table of resistance values of the coil according to temperature. According to claim 14,
a driver that drives the coil according to a PWM signal;
A current sensor that detects the current in the coil; and
A processor that monitors the current of the coil in real time through the current sensor and adjusts the duty ratio of the PWM signal according to the current of the coil to maintain the rated current corresponding to the target resistance level set in the EMS;
Exercise bike including. According to claim 17,
The processor calculates a current compensation value based on a table of current values flowing through the coil according to temperature and a table of rated current values for each resistance level, and adjusts the duty ratio of the PWM signal according to the current compensation value. According to claim 18,
The processor compensates for the current flowing in the coil by increasing the duty ratio of the PWM signal when the current in the coil becomes smaller than the rated current value for each resistance level. According to claim 13,
The temperature compensation system is
An exercise bike further comprising a memory storing at least one of a table of resistance values of the coil according to temperature, a table of current values flowing through the coil according to temperature, and a table of rated current values for each resistance level.

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